Opportunities for Conceptualizing Health Disparities in Behavioral Health Care Margarita Alegria, Ph.D. Professor, Dept. of Psychiatry, Harvard Medical School Xiao-li Meng, Ph.D. Professor and Chair Dept. of Biostatistics, Harvard University Julia Lin, Ph.D. Instructor, Dept. of Psychiatry Harvard Medical School Chih-nan Chen, Ph. D.c Dept. of Economics Boston University Naihua Duan, Ph.D. Professor, Dept. of Biostatistics UCLA Academy Health Meeting, Florida, Behavioral Health Interest, June 5, 2007

Service Disparities in Behavioral Services Disparities in health and behavioral health care are lasting, despite the intense attention they have received and the considerable spending by the United States on health care compared to other industrialized nations. Understanding the mechanisms for disparities and the options to reduce disparities is paramount. However, there is less discussion of how we conceptualize those service disparities and the assumptions in our analytical strategy when we measure service disparities. There is no consensus on the definition for healthcare disparity, impeding efforts to mitigate the problem and improve the access and quality of care for disadvantaged subpopulations

IOM Model: Differences, Disparities, and Discrimination Access to Behavioral Health Care Difference Clinical Appropriateness and Patients Need and Preferences The Operation of Healthcare Systems and Legal and Regulatory Climate Patient-Provider Interaction: Biases, Stereotyping, and Uncertainty Disparity Non-Minority Minority

Figure 1: Differences, Disparities, and Discrimination: Populations with Equal Access to Behavioral Healthcare Access to Behavioral Health Care Difference Differences in Need and Patient Preferences Operation of Healthcare Sys and Provider Organization Discrimination: Biases, Stereotyping, & Uncertainty Disparity Non-Minority Minority Source: Gomes and McGuire, 2001, adapted by Alegria et al, 2004 Operation of Community System Patient and Family Level Factors Changes in socio-contextual, cultural and political forces Healthcare Policies/Regulations

Objective of the Presentation To estimate the level of disparities between ethnic/racial minority patients (Latinos, Asians, African-Americans) and non-Latino whites in the access to and intensity of behavioral health treatments. We conduct three types of estimation 1. Unadjusted except by presence of having any psychiatric/SU disorder-traditional 2. Conditional Disparity 3. Marginal Disparity

Combined NLAAS/NCS-R Study A national psychiatric epidemiologic survey conducted to measure psychiatric/SU disorders and behavioral health service usage in a nationally representative sample of Asians and Latinos (NLAAS). We also use data from the NCS-R (conducted in ) to incorporate contrasts to Non-Latino whites and African Americans. NLAAS was conducted in 2002 and 2003 in English, Spanish, Chinese, Tagalog and Vietnamese, based on the respondents language preference Contains detailed information on eleven psychiatric disorders using the Composite International Diagnostic Interview (CIDI). In addition, we add other health measures: sex, age (35-49, 50-64, >=65), chronic conditions, WHO-DAS functioning (cognitive, mobility, care, social, out of role), to do health adjustments.

Different Approach to Assessing Behavioral Health Service Disparities Takes into account information about mental/SU disorders not as a dichotomy but as multidimensional measures. To adjust for health/ mental health/SU differences, we make different assumptions about the mechanisms of these disparities. We apply a two-part model. First, we determine disparities in access to services. Second, we determine disparities in the intensity of treatment, given access to behavioral health care. This is important because the mechanisms to address access disparities might differ from those that deal with disparities in service intensity of Tx.

Statistical Analyses Statistical Analyses We will present three types of access and intensity of service disparities following the statistical procedures presented by Dr. Meng: Unadjusted except by presence of having any psychiatric/SU disorder Conditional Disparity Health (A)SES/Non-HealthService Use Marginal Disparity SES/Non-HealthHealth(A)Service Use

Characteristics of NLAAS/NCS-R Respondents Total combined sample n = 8,962 Non- Latino White n = 3,523 Latino n =2,776 Asian n = 2,075 African American n = 588 Chi-square test of difference (P value) Age Category years30.2%26.0%47.8%40.0%38.7% years30.1%29.7%30.6%33.4%30.7% years21.6%23.6%13.4%17.1%18.2% 65 years or more18.2%20.8%8.2%9.5%12.4% College Education No75.2%73.4%90.0%58.7%86.4% Yes24.8%26.6%10.0%41.3%13.6% Type of Insurance Not insured12.6%8.7%33.0%12.9%17.0% Private through employer56.2%59.3%40.8%58.6%40.8% Private purchased4.7%4.8%2.8%8.8%5.0% Medicare19.9%22.6%9.8% 18.2% Medicaid4.1%2.5%11.5%4.9%13.4% Other2.4%2.2%2.1%4.9%5.6%

Disparity in Probability of Accessing Behavioral Health Services

Disparity in Intensity of Behavioral Services Use

Summary of Results on Access Depending on your assumptions of the causes of disparities, you might obtain differences in the estimates of access disparities across minority groups. However, with the three definition of disparities, we find strong evidence of disparities in access for behavioral services for Latinos and good evidence for Asians. The conditional and marginal probability are testing two extreme assumptions and they still give similar estimates of disparities in access. It can be treated as sensitivity that even under different assumptions, the disparities in access are significant for Latinos and suggestive for Asians.

Summary of Results on Intensity No evidence of disparities in intensity of services for the Latino population as compared to whites. For Asians our estimate of the disparity in intensity, depends on the model assumptions. Under the conditional disparity, we find that Asians have 5.4 more visits than whites on average after adjusting for health of minority to match that of non- Latino whites. Under the marginal disparity assumptions, we find no disparity in behavioral service intensity for Asians as compared to non- Latino whites. Our estimates are too variable to be conclusive. Our results demonstrate the importance of carefully distinguishing our disparities assumptions before engaging in estimation of the disparities.

Our future work will….. Add the NSAL sample to improve our estimates of behavioral service disparities for African Americans. Move to testing potential mechanisms linked to access disparities, intensity of service disparities and adequacy of Tx disparities.